Computer Science Homework Answers | Computer Science Homework Help

Questions

The greatest common divisor of two integers x and y is the largest positive integer that...

The greatest common divisor of two integers x and y is the largest positive integer that evenly divides both. For example, gcd(12,6)=6, gcd(21,14)=7, gcd(31,10)=1, gcd(55,25)=5

Recall that the gcd of two integers is gcd(a,0) = a gcd(a,b) = gcd(b, a%b) Create int gcd(int x, int y).

Assume that the two integers are zero or positive. Write the code as a pure function. Put it in a file gcd.c. Of course, you will need to test it.

The function Φ(n) counts how many integers 1 to n are relatively prime to n. Two integers x and y are relatively prime when gcd(x,y)= 1. So 5 and 12 are relatively prime, but 3 and 12 are not.

For example, Φ(1)=1, Φ(2)=1, Φ(5)=4, Φ(6)=3, Φ(8)=4, Φ(31)=30 Write a function int phi(int n) that computes this. Make this a pure function. Put it in its own file, phi.c. Write a driver that contains main() to test it. Put this in its own file phiTester.c.

C:\Source>gcc phiTester.c gcd.c phi.c

C:\Source>.\a.exe

Enter n: 259

Phi is 216

Turn in separate source files tau.c, tauSearch.c, phi.c and phiTester.c.

From poster: Please use comments, I want to see how it works!

In: Computer Science

Create a C++ program to simulate an art gallery: 4 classes: Gallery class Has three vectors...

Create a C++ program to simulate an art gallery:

4 classes:
- Gallery class
  - Has three vectors of type Painting which represent three categories of paintings (abstract, impressionism, pointillism)
  - Has a function that reads in paintings from a file and stores each painting in the correct vector
  - Read in paintings from file (will have multiple paintings)

Title of painting

Artists first name

Artists last name

Address street number

Address street name

Address city

Address state

Address zip

Artists website

User is asked to enter a series of numbers. That input will stop when user enters...

User is asked to enter a series of numbers. That input will stop when user enters -9999. Find a maximum number from that series and a minimum number from that series. Output the location of Maximum number and minimum number.

Write a C++ program that asks the user to repeatedly input positive numbers until -1 is pressed. Your program should print the second largest number and the count of even and odd numbers.

Write a C++ program that asks the user to enter a positive number N, and print the following pattern. The pattern is shown for N = 5.

12345

23451

34521

45321

54321

Write a program that takes a set of N integers and count the frequency of ODD digits appeared in these N integers.

Sample Input:

How Many Numbers you want to input: 3

Number 0: 7809

Number 1: 1127

Number 2: 8381

Output:

Frequency of appeared ODD digits: 7

The digits 7809. 5127. 8381. So the count of these ODD digits is 7.

In: Computer Science

How do I calculate the total of all invoices? Here is my code: # Part F...

How do I calculate the total of all invoices?

Here is my code:

# Part F Calculate the total of invoices

invoices=[]

invoices.append((83,'Electric Sander',7,57.98))
invoices.append((24,'Power Saw',18,99.99))
invoices.append((7,'Sledge Hammer',11,21.50))
invoices.append((77,'Hammer',76,11.99))
invoices.append((39,'Jig Saw',3,79.50))

print('\nThe total of all invoices is', invoice)
for invoice in invoices:
print(invoice)

In: Computer Science

Comparison between md5 and sha_x

In: Computer Science

How would you map invoices by description and quantity, then sort the invoices by quantity? Here...

How would you map invoices by description and quantity, then sort the invoices by quantity?

Here is my code:

#Part C: Map each invoice tuple containing part description and then quantity, sort by quantity

invoices=[]

invoices.append((83,'Electric Sander',7,57.98))
invoices.append((24,'Power Saw',18,99.99))
invoices.append((7,'Sledge Hammer',11,21.50))
invoices.append((77,'Hammer',76,11.99))
invoices.append((39,'Jig Saw',3,79.50))

list(map(lambda invoice:invoice[1,2]))

invoices.sort(key=lambda invoice:invoice[2])

print('\nSorted by Quantity')
for invoice in invoices:
print(invoice)

this is python

In: Computer Science

Describe why WSDL document is important for creating a web service client?

In: Computer Science

What is the key goal of messaging for enterprise computing?

In: Computer Science

PYTHON: Develop an algorithm for finding the most frequently occurring value in a list of numbers....

PYTHON: Develop an algorithm for finding the most frequently occurring value in a list of numbers. Use a sequence of coins. Place paper clips below each coin that count how many other coins of the same value are in the sequence. Give the pseudocode for an algorithm that yields the correct answer, and describe how using the coins and paper clips helped you find the algorithm.

Please solve in python!

In: Computer Science

PYTHON: Implement the sieve of Eratosthenes: a function for computing prime numbers, known to the ancient...

PYTHON: Implement the sieve of Eratosthenes: a function for computing prime numbers, known to the ancient Greeks. Choose an integer n. This function will compute all prime numbers up to n. First insert all numbers from 1 to n into a set. Then erase all multiples of 2 (except 2); that is, 4, 6, 8, 10, 12, . . . . Erase all multiples of 3, that is, 6, 9, 12, 15, ... . Go up to √ n. The remaining numbers are all primes.

Please solve in python!

In: Computer Science

Project part 3: Part Three: Complete the addShip() Method 1. In the Driver.java file, see below...

Project part 3:

Part Three: Complete the addShip() Method

1. In the Driver.java file, see below for where you will add code to finish the addShip() method.

// Add a New Ship public static void addShip() {

// complete this method

}

2. Next, review the required functionality of the “Add Ship” menu option below.

Menu Option Validation Check(s) Functionality
Add Ship - Ensures ship does not already exist in our system - Ensures all class variables are populated
Adds ship to system

3. Add Ship Method: Write the code for the addShip() method. When your code is complete, test the output. Be sure that the completed method does the following:

a. Adds a new Ship object b. Includes all class variables c. Updates appropriate ArrayList

TIP: You can refer to the Ship.java class constructor to make sure you have included all variables.

Here is the given ship code:

public class Ship {

// Class Variables
private String shipName;
private int roomBalcony;
private int roomOceanView;
private int roomSuite;
private int roomInterior;
private boolean inService;

// Constructor - default
Ship() {
}

// Constructor - full
Ship(String tName, int tBalcony, int tOceanView,
int tSuite, int tInterior, boolean tInService) {
shipName = tName;
roomBalcony = tBalcony;
roomOceanView = tOceanView;
roomSuite = tSuite;
roomInterior = tInterior;
inService = tInService;
}

// Accessors
public String getShipName() {
return shipName;
}

public int getRoomBalcony() {
return roomBalcony;
}

public int getRoomOceanView() {
return roomOceanView;
}

public int getRoomSuite() {
return roomSuite;
}

public int getRoomInterior() {
return roomInterior;
}

public boolean getInService() {
return inService;
}

// Mutators
public void setShipName(String tVar) {
shipName = tVar;
}

public void setRoomBalcony(int tVar) {
roomBalcony = tVar;
}

public void setRoomOceanView(int tVar) {
roomOceanView = tVar;
}

public void setRoomSuite(int tVar) {
roomSuite = tVar;
}

public void setRoomInterior(int tVar) {
roomInterior = tVar;
}

public void setInService(boolean tVar) {
inService = tVar;
}

// print method
public void printShipData() {
int spaceCount;
String spaces = "";
spaceCount = 20 - shipName.length();

for (int i = 1; i <= spaceCount; i++) {
spaces = spaces + " ";
}

System.out.println(shipName + spaces + roomBalcony + "\t" +
roomOceanView + "\t" + roomSuite + "\t" +
roomInterior + "\t\t" + inService);
}

// method added to print ship's name vice memory address
@Override
public String toString() {
return shipName;
}
}

And here is the driver code that needs to be completed:

import java.util.ArrayList;
import java.util.Scanner;

import static java.lang.Integer.parseInt;

public class Driver {

// class variables (add more as needed)
private static ArrayList<Ship> shipList = new ArrayList();
private static ArrayList<Cruise> cruiseList = new ArrayList();
private static ArrayList<Passenger> passengerList = new ArrayList();

public static void main(String[] args) {

initializeShipList(); // initial ships
initializeCruiseList(); // initial cruises
initializePassengerList(); // initial passengers

// add loop and code here that accepts and validates user input
// and takes the appropriate action. include appropriate
// user feedback and redisplay the menu as needed

}

// hardcoded ship data for testing
// Initialize ship list
public static void initializeShipList() {
add("Candy Cane", 20, 40, 10, 60, true);
add("Peppermint Stick", 10, 20, 5, 40, true);
add("Bon Bon", 12, 18, 2, 24, false);
add("Candy Corn", 12, 18, 2, 24, false);
}

// hardcoded cruise data for testing
// Initialize cruise list
public static void initializeCruiseList() {
Cruise newCruise = new Cruise("Southern Swirl", "Candy Cane", "Miami", "Cuba", "Miami");
cruiseList.add(newCruise);
}

// hardcoded cruise data for testing
// Initialize passenger list
public static void initializePassengerList() {
Passenger newPassenger1 = new Passenger("Neo Anderson", "Southern Swirl", "STE");
passengerList.add(newPassenger1);

Passenger newPassenger2 = new Passenger("Trinity", "Southern Swirl", "STE");
passengerList.add(newPassenger2);

Passenger newPassenger3 = new Passenger("Morpheus", "Southern Swirl", "BAL");
passengerList.add(newPassenger3);
}

// custom method to add ships to the shipList ArrayList
public static void add(String tName, int tBalcony, int tOceanView,
int tSuite, int tInterior, boolean tInService) {
Ship newShip = new Ship(tName, tBalcony, tOceanView, tSuite, tInterior, tInService);
shipList.add(newShip);
}

public static void printShipList(String listType) {
// printShipList() method prints list of ships from the
// shipList ArrayList. There are three different outputs
// based on the listType String parameter:
// name - prints a list of ship names only
// active - prints a list of ship names that are "in service"
// full - prints tabbed data on all ships

if (shipList.size() < 1) {
System.out.println("\nThere are no ships to print.");
return;
}
if (listType == "name") {
System.out.println("\n\nSHIP LIST - Name");
for (int i = 0; i < shipList.size(); i++) {
System.out.println(shipList.get(i));
}
} else if (listType == "active") {
System.out.println("\n\nSHIP LIST - Active");

System.out.println("-----------------------------------------------");
System.out.println(" Number of Rooms In");
System.out.print("SHIP NAME Bal OV Ste Int Service");
System.out.println("\n-----------------------------------------------");
for (Ship eachShip: shipList) {
if(eachShip.getType()==true)
eachShip.printShipData();
}

} else if (listType == "full") {
System.out.println("\n\nSHIP LIST - Full");
System.out.println("-----------------------------------------------");
System.out.println(" Number of Rooms In");
System.out.print("SHIP NAME Bal OV Ste Int Service");
System.out.println("\n-----------------------------------------------");
for (Ship eachShip: shipList)
eachShip.printShipData();

} else
System.out.println("\n\nError: List type not defined.");
}

public static void printCruiseList(String listType) {
if (cruiseList.size() < 1) {
System.out.println("\nThere are no cruises to print.");
return;
}
if (listType == "list") {
System.out.println("\n\nCRUISE LIST");
for (int i=0; i < cruiseList.size(); i++) {
System.out.println(cruiseList.get(i));
}
} else if (listType == "details") {
System.out.println("\n\nCRUISE LIST - Details");
System.out.println("------------------------------------------------------------------------------------------");
System.out.println(" |----------------------PORTS-----------------------|");
System.out.print("CRUISE NAME SHIP NAME DEPARTURE DESTINATION RETURN");
System.out.println("\n-----------------------------------------------------------------------------------------");
for (Cruise eachCruise: cruiseList)
eachCruise.printCruiseDetails();
} else
System.out.println("\n\nError: List type not defined.");
}

public static void printPassengerList() {
if (passengerList.size() < 1) {
System.out.println("\nThere are no passengers to print.");
return;
}
System.out.println("\n\nPASSENGER LIST");
System.out.println("-----------------------------------------------------");
System.out.print("PASSENGER NAME CRUISE ROOM TYPE");
System.out.println("\n-----------------------------------------------------");
for (Passenger eachPassenger: passengerList)
eachPassenger.printPassenger();
}

// display text-based menu
public static void displayMenu() {

System.out.println("\n\n");
System.out.println("\t\t\tLuxury Ocean Cruise Outings");
System.out.println("\t\t\t\t\tSystem Menu\n");
System.out.println("[1] Add Ship [A] Print Ship Names");
System.out.println("[2] Edit Ship [B] Print Ship In Service List");
System.out.println("[3] Add Cruise [C] Print Ship Full List");
System.out.println("[4] Edit Cruise [D] Print Cruise List");
System.out.println("[5] Add Passenger [E] Print Cruise Details");
System.out.println("[6] Edit Passenger [F] Print Passenger List");
System.out.println("[x] Exit System");
System.out.println("\nEnter a menu selection: ");
}

// Add a New Ship
public static void addShip() {

// complete this method

}

// Edit an existing ship
public static void editShip() {

In: Computer Science

Project Part 4: Part Four: Complete the addCruise() Method 1. In the Driver.java file, see below...

Project Part 4:

Part Four: Complete the addCruise() Method

1. In the Driver.java file, see below for where you will add code to finish the addCruise() method.

// Adda New Cruise public static void addCruise() {

// complete this method

}

2. Next, review the required functionality of the “Add Cruise” menu option below.

Menu Option Validation Check(s) Functionality
Add Cruise - Ensures cruise does not already exist in our system - Ensures all class variables are populated
Adds cruise to system

3. Add Cruise Method: Write the code for the addCruise() method. When your code is complete, test the output. Be sure that the completed method does the following:

a. Prompts the user for input b. Requires all class variables when creating a cruise c. Validates the ship name and ensures it is in service d. Ensures ship name is not already assigned a cruise e. Adds the new cruise to the cruiseList ArrayList if validation checks

Given cruise code:

public class Cruise {

// Class Variables
private String cruiseName;
private String cruiseShipName;
private String departurePort;
private String destination;
private String returnPort;

// Constructor - default
Cruise() {
}

// Constructor - full
Cruise(String tCruiseName, String tShipName, String tDeparture, String tDestination, String tReturn) {
cruiseName = tCruiseName;
cruiseShipName = tShipName;
departurePort = tDeparture;
destination = tDestination;
returnPort = tReturn;
}

// Accessors
public String getCruiseName() {
return cruiseName;
}

public String getCruiseShipName() {
return cruiseShipName;
}

public String getDeparturePort() {
return departurePort;
}

public String getDestination() {
return destination;
}

public String getReturnPort() {
return returnPort;
}

// Mutators
public void setCruiseName(String tVar) {
cruiseName = tVar;
}

public void setCruiseShipName(String tVar) {
cruiseShipName = tVar;
}

public void setDeparturePort(String tVar) {
departurePort = tVar;
}

public void setDestination(String tVar) {
destination = tVar;
}

public void setReturnPort(String tVar) {
returnPort = tVar;
}

// print cruise details
public void printCruiseDetails() {

// complete this method

}

Here is the driver code that needs completion: